Elevator.



Patented Mar. 26, l90l.

H. BOLANDEB.

E L EV AT 0 R.

(Application filed Dec. 26. 1900.1

2 Sheets8heet I.

(No mm.)

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Patented Mag. 26, IQOI H. BOLANUER.

ELEVATOR.

(Application filed Dec. 28. 1,900;

2 Sheets Sheet 2 (Nolodeh) UNITED- STATES PATENT ()FFICE.

HENRY BOLA'NDER, OF ROMULUS, NEW YORK.

ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 670,466, dated March26, 1901. Application filed December 26, 1900. serial No. 41,157. (Nomodel.)

To all whom it may concern:

Be it known that I, HENRY BOLANDER, a citizen of the United States,residing at Rom ulus, in the county of Seneca and State of New York,have invented a new and useful Elevator, of which the following is aspecification.

This invention relates to elevators; and it has for its object toprovide a device of this nature most particularly adapted for liftingfreight, although it will be understood from the following descriptionthat the principles involved may be embodied in an elevator forpassenger service.

A further object of the invention is to provide a guide-frame with whichthe elevatorplatform is engaged in such manner as to permit of readyvertical movement, while preventing lateral movement such as woulddisplace it from the frame.

Additional objects and advantages of the invention will be apparent fromthe following description.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is a perspective view showing the complete elevator. Fig. 2 isa front elevation of the entire apparatus. Fig. 3 is a section on line 33 of Fig. 2. Fig. 4 isa section on line 4 4 of Fig. 2. Fig. 5 is asection on line 5 5 of Fig.2.

Referring now to the drawings, the present apparatus comprises arectangular base including sills and 11, cross-pieces 12 and 13, and anintermediate sill 14, which are secured firmly together, as shown. Uponthe sills 10 and 11 are erected uprights 15 and 16, the upper portionsof which are rectangular in crosssection, as shown at 17 and 18,respectively, while the lower portions thereof are in the form ofangle-rails 19 and 20, each rail including a laterally-projecting flange21 and a forwardly-projecting flange 22. Connecting the upper ends ofthe uprights 15 and 16 is a cross-bar 23, the front face of whichisrecessed to receive a third upright 24, the lower end of which ismounted in the intermediate sill 14.

The platform 25 of the elevator has recesses 26 and 27 in its rear edge,in which are mounted antifriction-rollers 28 and 29, which bear againstthe forwardly-projecting flanges 22 of right.

the uprights 15 and 16,while adjacent to these recesses arerearwardly-projecting portions 30 and 31, having laterally-extendingrecesses 32 and 33, in which are mounted additional antil'riction-rolls34 and 35, which bear against the inner side faces of the flanges 22 ofthe uprights 15 and 16, the platform being thus held against lateraldisplacement from the uprights, while the friction incident to rearwardpressure of the platform against the uprights is taken up in greaterpart by the rollers 28 and 29.

To prevent forward displacement of the platform from the uprights, aplate 36 is secured to the rear portion of the platform and is bentupwardly to lie against the front face of the intermediate upright, andriveted or otherwise secured to this upwardly-projecting portion of theplate are two yoke shaped frames 37 and 38, having bearings in theirends lying beyond the rear of the intermediate upright. In the bearingsof each of the frames is mounted a spindle which carries a roller 39,which bears against the rear face of the intermediate upright and whichhas end flanges which lie against the side edges of said upright. Theserollers prevent outward movement of the plate and therewith of theplatform.

To raise and lower the platform, a crankshaft 40 is journaled in theupper portions of the uprights l5 and 16 and just below the cross-barthereof, and which shaft carries two sprockets 41 and 42 between theuprights and which aline with the sprockets 43 and 44, which are mountedupon a shaft 45, mounted in the sills of the base of the apparatus andin the plane of the uprights 15 and 16 and slightly to one side of theintermediate up- Sprocket-chains46 and 47 engage the corresponding upperand lower sprockets, the upper sprockets being driving-sprockets for thechains, while the lower sprockets are mere idlers. These'chains passthrough recesses in the back of the platform of the elevator and aresecured firmly therein, so that as the chains are moved in one directionthe platform will be raised, and when they are moved in an oppositedirection the platform is lowered. Owing to the positions of the twoshafts relatively to the uprights, the strain on the shafts as theplatform is raised is longitudinally of the uprights, and great strengthis thus given to the structure.

Through the upper squared portions of the uprights 15 and 16 are formedpassages 48 and 49, and in the passages are rotatably mounted pulleys 50and 51, with which are engaged ropes 52 and 53, which are attached tothe platform and taken upwardly and over the pulleys and havecounterbalancing-weights 55 and 56 attached to their rear ends.

To assist in raising the elevator, a countershaft 57 is mounted in theuprights 15 and 16 below the upper crank-shaft, and at one end thereof,at the outer side of the upright 16, there is fixed a sprocket 58, withwhich is engaged a chain 59, which engages also with a sprocket 60 uponthe outer portion of the upper shaft.

To prevent lateral play of the lower id1ersprockets 43 and 44, the hubsthereof are grooved peripherally, and in these grooves are engagedcross-bars 45, the ends of which are engaged with the cross-pieces ofthe base of the elevator.

With this construction it will be seen that there is provided a simpleconstruction that ischeap of manufacture and which is strong anddurable.

In practice modifications of the specific construction shown may be madeand any suitable materials and proportions may be used for the variousparts without departing from the spirit of the invention.

What is claimed is 1. An elevator comprising a base including sills andconnecting cross-pieces, uprights mounted upon the sills and havingforwardlyprojecting flanges, an additional intermediate upright, aplatform having antifrictionrolls disposed against the front faces ofthe flanges of the uprights, additional antifriction-rolls carried bythe platform and engaging the side faces of the flanges, a plateextending upwardly from the platform and 1yiug against the intermediateupright, yokeshaped plates mounted upon the last-named plates and withtheir legs projecting beyond the intermediate upright,antifriction-rolls mounted in the ends of the yoke-shaped plates andbearing against the rear of the intermediate upright to prevent forwarddisplacement of the platform, and means for raising and lowering theplatform.

2. An elevator comprising a base having side and intermediate uprightsmounted thereon, an elevator -platforin engaged slidably with theuprights, upper and lower shafts mounted in the outer uprights, one ofsaid shafts having a crank and fixed sprockets, and the other havingsprockets mounted loosely thereon, chains engaging correspondingsprockets and attached to the platform, the idler-sprockets havinggrooved hubs, and means engaged with the grooves of the hubs to preventlateral displacement of the idlersprockets from alinement with theirrespective fixed sprockets.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

HENRY BOLANDER.

Witnesses:

JOHN W. SNooK, CHAS. S. MGKNIGHT.

